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The sky on September 13, 2024 — as it really was

That day the Sun stood in Leo, while the horoscope says "Virgo". The gap is 24.2° of precession.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♃–☉ 90.9°♃–♀ 118.0°♂–☿ 61.4°☉–☽ 117.3°♀–☽ 90.3°☽–♄ 57.1° ♃︎20° ♂︎5° ☿︎6° ☉︎21° ♀︎18° ☽︎18° ♄︎15°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 171.2° · sign Virgo · constellation Leo
  • ☽︎ Moon — 288.5° · sign Capricorn · constellation Sagittarius
  • ☿︎ Mercury — 156.6° · sign Virgo · constellation Leo
  • ♀︎ Venus — 198.3° · sign Libra · constellation Virgo
  • ♂︎ Mars — 95.1° · sign Cancer · constellation Gemini
  • ♃︎ Jupiter — 80.3° · sign Gemini · constellation Taurus
  • ♄︎ Saturn — 345.6° · sign Pisces · constellation Aquarius
  • ☽︎ Moon 73% illuminated

astronomy-engine ephemerides (VSOP87/ELP), IAU 1930 constellation boundaries. Positions accurate to a fraction of a degree.

The day’s dossier, from real data

Checkable facts with a tag and a source; the classical reading is in the chart.

  1. The Moon that day [EXACT]

    waxing gibbous, 73% lit; the Moon was 377,550 km away.

    astronomy-engine
  2. How far Earth has travelled since [EXACT]

    2.1 orbits of the Sun — 1,934 million km, that is 2,516 return trips to the Moon; 752 rotations of Earth; with the Sun — 14.9 billion km around the Galactic centre, 0.6 light-days.

    29.78 km/s along the orbit; 230 km/s around the Galactic centre
  3. Mars then and now [EXACT]

    On that day Mars was 203 million km away; today it is 245 million km (farther by 1.2×).

    astronomy-engine; checked against JPL Horizons for 2026-09-14
  4. Solar cycle [ESTIMATE]

    That day fell in solar cycle 25, near maximum (46% through the cycle).

    SILSO smoothed minima
  5. When the sky repeats [EXACT]

    Mars returns to that day’s point of its orbit on June 18, 2028; Jupiter — in 2036; a full moon exactly on this date — September 13, 2057

    sidereal periods: Mars 686.98 d, Jupiter 11.862 yr
  6. How far the sky has drifted since [EXACT]

    The vernal point has shifted 108″ since that day; the real constellations now sit 24.2° away from the astrologers’ “signs”.

    precession 50.29″/yr
  7. Picture of the day [EXACT]

    NASA Astronomy Picture of the Day for this date: apod.nasa.gov/apod/ap240913.html

    NASA APOD

Other dates

2024-09-12 2024-09-14 everyone born September 13
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